The document discusses the author's experience arriving at work to find their building being used as a film location. They compare the professional film shoot to their own amateur teaser trailer shoot with no budget or experience. They had to be creative to overcome problems like building a makeshift camera dolly out of a small trolley and waiting until dark to shoot without proper lighting equipment. Being an extra on the film shoot showed them the attention to detail for background actors and how taking reference photos could help with continuity issues.